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用原子吸收光谱法测定了“东北水三七”根、茎、叶的２１种化学元素．结果表明，不同部位的元素含量有一定差别．
Atomic absorption spectrometry was used to determine the 21 chemical elements of roots, stems and leaves of “Northeast water Panax notoginseng”. The results show that there are some differences in the content of elements in different parts.